Who: A slew of dolled up celebrities, socials, art world doyennes and fashion folks, including Olivia Wilde, Lake Bell and Giovanna Battaglia, each of whom showed up in head-to-toe Max Mara. Girls actor Adam Driver checked out the art up for auction while others in the crowd checked out model Jourdan Dunn, who looked stunning in a white cut-out dress by Alexander Wang. Hannah Bronfman, whose boyfriend Brendan Fallis kept the party going from the DJ booth, stood out in a lime green leather Max Mara skirt and golden appliqué eyeshadow.

Why: Hosted annually by Whitney Contemporaries, the museum's group of young collectors and art enthusiasts, the party debuted a new partnership this year with website Art.sy. Each of the artworks up for grabs appeared online, allowing guests a preview. "There's an amazing piece by Kim McCarty that I really want to bid on," exclaimed one partygoer, "but I have to run out to a dinner!" Alas, there's always next year!